Means for preventing oil leakage



May 27, 1930. J. ABENANTI MEANS FOR PREVENTING OIL LEAKAGE Filed Aug. 23, 1926 Patented May 27, 1930 UNITED sT'ATEs' PATENT orrl'cn Joanna anmunrr, or cn'rcaca umors, ASSIGNOR 'ro crown nnmosrar a SUPPLY.

ea, or cmcnao, rumors,- A CORPORATION or ILLINOIS W8 FOB IREV1111211IITG; OIL LEAKAGE a lication filed August as; 1926. Serial 110. 130,989..

, This invention relates to means for preventing leaka e of oil from casings such as gear casings w erein the moving parts run partially submerged in'oil.

More particularly, the object of this lnvention is to preventv leakage of oil from gear casings along the rotating shaft which ex.- tends from said casin through a wall thereof to avoid the waste 0 oil and the danger of it spreading over the-machinery and increasing the fire risk as well as destroying the body l of the machinery such as motors and the like; Another object is to provide such means without having to provide a tight fit around -the shaft where it goes through the wall of the gear casing or without using a stuffing box orpacking around the shaft and thus cause friction and increase the power necessa to.;drive the shaft. is 2o nother object ofthe invention is to provide, with the means for keeping the oil from travelling beyond a certain point on the shaft, a, shield which prevents the gears or other mechanism running partly submerged in oil from throwing oil onto the shaft beyond that oint.

p Furthermore, it is the object of this inven tion to provide in addition to the means in the gearcasing for keeping the oil from leaking out along the shaft, a second means" outside the casing which also aids in preventing leakage of the oil and a drain from this outside means for returning the oil which may escape through the casing wall back to the gear casing for further use.

, In the accompanying drawings wherein the preferred form oftmy invention is shown,

Fig. l is an end view partly in section of an apparatus to which my device may be attached; Fig. 2 is an enlarged cross section showing the particular means I use to prevent the oil from escaping from'the gear casing; and

Fig. 3 is a section on the line 33 of Fig. 2. In the drawings, 10 indicates the base upon which the gear casing having the bottom 11, the sides 12 and 13 is mounted. Inside the gear casing is a bearing 14 for one end of the shaft 15 which carries the gear 16 meshing with another gear 17 on the shaft 18,

wall 13.

which shaft may be connected to any tool, such as a bufling or grinding tool to operate it. The motor 19'is mounted on a shelf of the base 10 and serves as' the means fordrivingthe shaft 15 which extends through the side M particular means for preventing the oil rom escaping along the shaft 15, when it is thrown up by the rotation of the gear 16 through the pool of. oil in the bottom of the casing, consists of the two members 20 and 21 shown more clearly in Fig. 2 and the mem-' ber 27 on the shaft 15. The member 20 has a recess 23 in the face thereof adjacent the casing wall 13 and at the bottom of this recess a drain opening 24 is provided forreturning the oil in the recess back to the main casing for further use. The bolts 22 extend through the member 21' and the gear casing wall 13 into the member 20-to retain-the members in place. Between the inner wall of the casing 13 and the' member 20 is provided a packing ring 26 to prevent any leakage of oil from the top of the member 20 down inside the recess 23 and onto the shaft. At this point I wish to point out that the shaft 15 does not bear on either the members 20, 21 or the wall 13, but fits loosely in these three members, each of which has an opening sufficiently large to allow clearance for the shaft and its rotation, thus any friction such as is present when a stufiing box or packing is used about the shaft is avoided. The collar 27 fits tightly around the shaft 15 and extends the main pool of oil in the bottom of the gear casing.

I have provided an additional means to catch any oil that may escape along the shaft beyond the member 27. This means consists of the recess 28 which is providedv in the face of the member 29 adjacent the wall 13 and in combination with said wall forms a pocket into which the oil may gather and drain back through the 0 enin 29in the wall 13 to the recess 23 and rom t ere through the opening 24 into the main casin Thus it will be seen that I have provide a simple, cheap and effective means for preventing the leakage of oil along the shaft and for returning the oil which cree es outwardly along the shaft back to the bearing casing. It is thought that the operation of the device is sufliciently clear from the above description and need not further be taken up at this point.

While I have described one form which my invention may take, it is obvious that it may be modified in various ways and I wish it to: be understood that I intend to avail myself of all such modifications or variations as may come within the scope of the appended claims.

Having thus described my invention, what I desire to claim and secure by Letters Patent is:

1. Means for preventing leakage of oil from an oil containing casinghaving a rotating member therein and a shaft extending from said member through a wall of said casing, comprising a member on one side of said Wall having an opening therethrough loosely receiving said shaft and havin a recess therein about said shaft in the side of. said member adjacent said wall, and a collar on said shaft within said recess for causing the oil to be directed awa from said shaft into said recess by centri gal force due to the rotation of said shaft, said member hav-' ing a drain opening therein for draining the oil from said recess, a second member on the other side of said wall having an opening therethrough loosely receiving said shaft and having a recess about said shaft in the side I thereof adjacent said wall, said wall having a drain opening therethrough connecting the two recesses.

2. Means for preventing leakage of oil from an oil containing casing having a rotating device therein and a shaft extending from said device through a wall of said casing comprising a memberiwithin said casing having a rim portion encircling the wall opening for 7 said shaft and secured to the wall and an inv wardly extending portion spaced from said wallhaving an opening therethrough for said shaft and means on said shaft between said I member and wall for directing the oil on said apertured to receive said shaft, means securing said members to said side wall,'said wall having a drainage duct connectingtthe'recesses in said members, an annular enlargement on said shaft within one of said recesses, and drain means leadin from the recess in said first member into sald casing.

In witness whereof, I hereunto subscribe my name this 28th day of July,.A. D. 1926.

I JOSEPH ABENANTI. 

